patch-2.4.19 linux-2.4.19/arch/mips/gt64120/momenco_ocelot/setup.c

• Lines: 123
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/gt64120/momenco_ocelot/setup.c
• Orig date: Sun Sep 9 10:43:01 2001

diff -urN linux-2.4.18/arch/mips/gt64120/momenco_ocelot/setup.c linux-2.4.19/arch/mips/gt64120/momenco_ocelot/setup.c
@@ -2,11 +2,12 @@
  * setup.c
  *
  * BRIEF MODULE DESCRIPTION
- * Galileo Evaluation Boards - board dependent boot routines
+ * Momentum Computer Ocelot (CP7000) - board dependent boot routines
  *
  * Copyright (C) 1996, 1997, 2001  Ralf Baechle
  * Copyright (C) 2000 RidgeRun, Inc.
  * Copyright (C) 2001 Red Hat, Inc.
+ * Copyright (C) 2002 Momentum Computer
  *
  * Author: RidgeRun, Inc.
  *   glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
@@ -116,8 +117,7 @@
 
 	/* Also a temporary entry to let us talk to the Ocelot PLD and NVRAM
 	   in the CS[012] region. We can't use ioremap() yet. The NVRAM
-	   appears to be one of the variants of ST M48T35 - see 
-	   http://www.st.com/stonline/bin/sftab.exe?table=172&filter0=M48T35
+	   is a ST M48T37Y, which includes NVRAM, RTC, and Watchdog functions.
 
 		Ocelot PLD (CS0)	0x2c000000	0xe0020000
 		NVRAM			0x2c800000	0xe0030000
@@ -155,6 +155,7 @@
 	GT_WRITE(GT_PCI1M0LD_OFS, 0x32000000 >> 21);
 	GT_WRITE(GT_PCI1M1LD_OFS, 0x34000000 >> 21);
 
+	/* For the initial programming, we assume 512MB configuration */
 	/* Relocate the CPU's view of the RAM... */
 	GT_WRITE(GT_SCS10LD_OFS, 0);
 	GT_WRITE(GT_SCS10HD_OFS, 0x0fe00000 >> 21);
@@ -207,17 +208,66 @@
 	switch(tmpword &3) {
 	case 3:
 		/* 512MiB */
-		add_memory_region(256<<20, 256<<20, BOOT_MEM_RAM);
+		/* Decoders are allready set -- just add the
+		 * appropriate region */
+		add_memory_region( 0x40<<20,  0xC0<<20, BOOT_MEM_RAM);
+		add_memory_region(0x100<<20, 0x100<<20, BOOT_MEM_RAM);
+		break;
 	case 2:
-		/* 256MiB */
-		/* FIXME: Is it actually here, or at 0x10000000? */
-		add_memory_region(128<<20, 128<<20, BOOT_MEM_RAM);
+		/* 256MiB -- two banks of 128MiB */
+		GT_WRITE(GT_SCS10HD_OFS, 0x07e00000 >> 21);
+		GT_WRITE(GT_SCS32LD_OFS, 0x08000000 >> 21);
+		GT_WRITE(GT_SCS32HD_OFS, 0x0fe00000 >> 21);
+
+		GT_WRITE(GT_SCS0HD_OFS, 0x7f);
+		GT_WRITE(GT_SCS2LD_OFS, 0x80);
+		GT_WRITE(GT_SCS2HD_OFS, 0xff);
+
+		/* reconfigure the PCI0 interface view of memory */
+		GT_WRITE(GT_PCI0_CFGADDR_OFS, 0x80000014);
+		GT_WRITE(GT_PCI0_CFGDATA_OFS, 0x08000000);
+		GT_WRITE(GT_PCI0_BS_SCS10_OFS, 0x0ffff000);
+		GT_WRITE(GT_PCI0_BS_SCS32_OFS, 0x0ffff000);
+
+		add_memory_region(0x40<<20, 0x40<<20, BOOT_MEM_RAM);
+		add_memory_region(0x80<<20, 0x80<<20, BOOT_MEM_RAM);
+		break;
 	case 1:
-		/* 128MiB */
-		add_memory_region(64<<20, 64<<20, BOOT_MEM_RAM);
+		/* 128MiB -- 64MiB per bank */
+		GT_WRITE(GT_SCS10HD_OFS, 0x03e00000 >> 21);
+		GT_WRITE(GT_SCS32LD_OFS, 0x04000000 >> 21);
+		GT_WRITE(GT_SCS32HD_OFS, 0x07e00000 >> 21);
+
+		GT_WRITE(GT_SCS0HD_OFS, 0x3f);
+		GT_WRITE(GT_SCS2LD_OFS, 0x40);
+		GT_WRITE(GT_SCS2HD_OFS, 0x7f);
+
+		/* reconfigure the PCI0 interface view of memory */
+		GT_WRITE(GT_PCI0_CFGADDR_OFS, 0x80000014);
+		GT_WRITE(GT_PCI0_CFGDATA_OFS, 0x04000000);
+		GT_WRITE(GT_PCI0_BS_SCS10_OFS, 0x03fff000);
+		GT_WRITE(GT_PCI0_BS_SCS32_OFS, 0x03fff000);
+
+		/* add the appropriate region */
+		add_memory_region(0x40<<20, 0x40<<20, BOOT_MEM_RAM);
+		break;
 	case 0:
 		/* 64MiB */
-		;
+		GT_WRITE(GT_SCS10HD_OFS, 0x01e00000 >> 21);
+		GT_WRITE(GT_SCS32LD_OFS, 0x02000000 >> 21);
+		GT_WRITE(GT_SCS32HD_OFS, 0x03e00000 >> 21);
+
+		GT_WRITE(GT_SCS0HD_OFS, 0x1f);
+		GT_WRITE(GT_SCS2LD_OFS, 0x20);
+		GT_WRITE(GT_SCS2HD_OFS, 0x3f);
+
+		/* reconfigure the PCI0 interface view of memory */
+		GT_WRITE(GT_PCI0_CFGADDR_OFS, 0x80000014);
+		GT_WRITE(GT_PCI0_CFGDATA_OFS, 0x04000000);
+		GT_WRITE(GT_PCI0_BS_SCS10_OFS, 0x01fff000);
+		GT_WRITE(GT_PCI0_BS_SCS32_OFS, 0x01fff000);
+
+		break;
 	}
 
 	/* Fix up the DiskOnChip mapping */
@@ -272,11 +322,13 @@
 static int io_base_ioremap(void)
 {
 	void *io_remap_range = ioremap(GT_PCI_IO_BASE, GT_PCI_IO_SIZE);
+
 	if (!io_remap_range) {
-		panic("Could not ioremap I/O port range\n");
+		panic("Could not ioremap I/O port range");
 	}
-	mips_io_port_base = io_remap_range - GT_PCI_IO_BASE;
+	set_io_port_base(io_remap_range - GT_PCI_IO_BASE);
+
 	return 0;
 }
-module_init(io_base_ioremap);
 
+module_init(io_base_ioremap);